11 Lady Isle House, Ferry Court, Cardiff, CF11 0JH

11 Lady Isle House is a one-bedroom mid-terrace house in Cardiff (CF11 0JH). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to 2003-2006 and council tax band D. The latest certificate (November 2019) shows a C (score 71). The rating has held steady at C across 2 certificates since August 2009. Between certificates, lighting went from Very Poor to Average; while hot-water efficiency dropped from Good to Very Poor. The recommended improvements would push it to B (score 84). Main heating runs on electricity. At 46 m² this is the 20th smallest of 56 units on EPC record in the building, where floor areas span 23–123 m². The building's EPC ratings span D to B across 56 units on file.

Untraded for 16 years, with the last transfer in March 2010. Across 2005–2010, sale prices on this property compounded at -7.5% per year. Today's modelled estimate of £134,000 is 48.9% above the 2010 sale price. On a £-per-square-foot basis, the last sale (£182/sq ft) was about 30% below the postcode norm. At 46 m² it's 29.2% smaller than the typical home in the postcode (65 m² median across 55 EPCs).